If you truly want it to be all right, pay for a professional editor. Ask for samples of their work.
There must be a host of internet forums devoted to this subject. Also, why not check out publishers' web sites to see what they require. There are also writers' guilds that must have presence on the internet.
The problem with randomly sending it to friends is you don't their experience or the quality of their work. Of course, paying someone doesn't insure quality, either. I routinely edit my professional work but I would NEVER say that I am an editor.